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@hitch tetra @anni @fitta Darme-APPARATUS.

alge rlganle :criant tu in ttesebtrrrs what ma making putt nf its amr.

TO ALL WHOM IT MAY @Obli-CERN.:

Be it known that I, R. N. ALLIIN, of Pittsford, in the countyof'Rutland, and State of Vermont, have invented certain new and usefulImprovements in a Drying-Apparatus; and I do herebydeclare that thefollowing is a full and complete description ofthe' same, referencebeing had to the accompanying drawings,

'making a. part of thisspecication, in which- Figure 1 is a side view ofthe apparatus.

Figure 2 is a view ofthe top. 4

Figure 3, a view ofthe inside.

Figure 4 is a front view. I

' Like letters of reference refer to like parts in the views.

A, fig. 2, is a case or cylinder, from each head of which projectpipe-journals B B, and upon which the' lcylinder is hung, and made torevolve between the sides or standards G.- The pipe or journal Bconnects with the heater D, by being fitted closely in the pipe E,projecting from the heater, and the journal B is fitted to the flue F',leading into the staclcior chimney G. Within'the case referredto, isarranged an annularchamber or cylinder, II, fig. 3, which, it will b eseen, is considerably less in sizeA than the outer one, A, leaving awide space, I, between thc two. The ends of the annular chamber areclosed by tightly-{itting heads J. Placed at'jequal distances around thecase A, are four rollers, K, over which, and around the cylinder, is anendless apron, L, the direction of which is shown in fig. 4, in which itwill be seen'that the apron covers theA case or cylinder nearly itsentire circumference. I

The practical use of-this apparatusis for drying' paper or paperboard,which, as ordinarily done, is a workV attended with much trouble andgreat 'length of time, in consequence of the thickness of theA paper,and'more especially is this the case in damp and winter weather. By the useof this drier, this labor and time is very considerably lessened, by amore rapid drying and less lhandling of the paper, and'dnhich isdonefinthe following manner: The heater D is heated up by the furnace M,the beat from which, on passing into kthe case, through thepipeand'journal E and B', is deilected by the vhead J of the annularchamber, 'and thereby caused to How over and around the chamber H to theinner surfaceof the case, thus heating the case more o r less as-,theamount of heat generated-in the furnace. A I j I It will be obviousthat, by the introduction of the chamber H, a'much less volume of heatwill be required to heat the case than if the chamberwerernot used, asthe li'eat is necessarily thrown to the surface instead of passingdirectly through the case, as would be the fact in the absence of thechamber. The case is made to revolve by any appropriate mechanicalappliances, and, as' it docs so, the sheets of paper, which are firstpar tially dried, are placed on the apron, which carries them around,bringing them in contact with and pressing against the heated surface ofthe case, which, on-being carriedaround slowly, according to thetemperature of the case,l orthe degree of damp'ness-of the paper, issoon dried and delivered, at the opposite sidel from whichA it wasfed,to the drier. 'By this means the paper is easily and quickly dried,'withmuch lesslabo'r and time thanv in the ordinary wny. It is al'so'muchsmoother and freef'of'wrinkles.

By theuse of this apparatus, paper board can be made as rapid1y-inwinter-as in the warmer seasons, for, in cold, wetvn'eather, it has beenfound almost impossible to thoroughly dry the paper, only inhighly-heated rooms, which is attended by great expense and labor.

What I claim as my improvement, and desire to secure by Letters Patentisv 1. The cylinder A, with an annular chamber revolving upon tubularjournals so arranged thatthe said journalsand annular chamber shall forman avenue for the passage of waste heat from the flue of the replace tothe chimney, and at the same time utilize said heat in its transit,substantially as and for the purpose set forth.

2. The revolving cylinder A, having an interior chamber H and hollowjournals B Bf, in combination with the flue of the boiler and stack,arranged and operating for the purpose, substantially as set forth.

3. The apron L, rollers K, in combination with the cylinder A, arrangedto receive the waste heat through one journal and discharge the samethrough the other into the chimney or stack, substantially as and forthe purpose set forth.. i Y I l R. N. ALLEN.

Witnesses- WALTER NORTH, HENRY F. KIMBALL.

